Oxford Ruled Index Cards are ruled on one side for easy note taking. The design offers top-quality commercial stock for superior durability and performance. The 3" x 5" size is versatile enough for studying, presenting, and list-making. Each card is perforated in the middle so you can easily separate to make half size study cards! Paper made from 10% recycled fiber with 10% post-consumer fiber. There are 75 full size index cards per individual pack, or 150 cards if you separate in half. Each set also comes with a handy binder ring to keep your cards together.